Today’s vending machines are typically stocked with unhealthy snack options, like candy bars, sodas, and chips. The first vending machines, however, dispensed a product that was good for your soul. These vending machines from the 1st century dispensed holy water. Hero of Alexandria, a Greek engineer, mathematician, and inventor built a box with a series of levers. When the user inserted a coin, it triggered the levers to open a valve and pour out a small amount of holy water.